Try each of these in the debugger and let us know how it works…
Listing the files:
q: files "insync.cfg" of folders of folders "C:\ProgramData\Druva\inSync4\users"
Find files containing the string
q: files "insync.cfg" whose (content of it contains "govcloud.druva.com:443") of folders of folders "C:\ProgramData\Druva\inSync4\users"
See if any exist:
q: exists files "insync.cfg" whose (content of it contains "govcloud.druva.com:443") of folders of folders "C:\ProgramData\Druva\inSync4\users"